Vizier87
Active Member
hi guys,
Back to business for me after learning heaps of optical circuits (but my programming still stinks
I connected an Xbee to both my uCs, 877A as a transmitter and 4455 as a receiver. I powered my Xbees up using a 3.3V regulator, and the rest is pretty much direct I suppose.
I checked the output of the transmitter using an O-Scope and got a nice square wave, and the same square wave at the receiver end. So i suppose the program's the one making the problem.
It's all simple: The received data will be displayed at PORTD. So far I received nothing.
Here's the transmitter (PIC16f877A):
The receiver is a PIC18F4455:
Appreciate the time spent on this. Thanks.
Vizier87.
Back to business for me after learning heaps of optical circuits (but my programming still stinks
I connected an Xbee to both my uCs, 877A as a transmitter and 4455 as a receiver. I powered my Xbees up using a 3.3V regulator, and the rest is pretty much direct I suppose.
I checked the output of the transmitter using an O-Scope and got a nice square wave, and the same square wave at the receiver end. So i suppose the program's the one making the problem.
It's all simple: The received data will be displayed at PORTD. So far I received nothing.
Here's the transmitter (PIC16f877A):
C:
void main() {
adcon1=0b00000111; //pcfg settings: all digital I/O
cmcon= 0b00000111; //comparators off
cvrcon=0; //voltage comparators off
txsta=0b00000100; //8-bit, Async mode, Hi-Speed,
intcon=0b11000000; //enable all peripheral interrupts
spbrg=129; //9.6 kBps
trise=0x07; //porte=input, pspmode_bit=0;
trisa=0b100000; //ra5=input
trisd=0xff; //rd4=input, rest output
trisb=0; //portb=output
trisc=0b10111111; //input for keypads and RX=input/TX=0utput
spen_bit=1; // serial port enable
portb=0;
porta=0;
while (1){
txreg=0xAA;
txen_bit=1;
}
}The receiver is a PIC18F4455:
C:
void main() {
trisd=0;
latd=0;
spen_bit=1; //enable rx-tx
rx9_bit=0; //8-bit
cren_bit=1;//enable receiver
sync_bit=0; //asynchronous mode selected
brgh_bit=1; //hi-speed
brg16_bit=0; //16-bit not selected
trisc=0b10000000; // rc7=input
intcon=0b11000000; //enable all interrupts
spbrg=129; //9.6 kbps
while (1){
rcreg=portd;
}
}Appreciate the time spent on this. Thanks.
Vizier87.